Plain Fortress had been rebuilt from the former Liang Kingdom's Plain City.
Back then, the city had been seized by the greenskins and nearly reduced to ruins. After they defeated the invading greenskins and reclaimed the city, they simply rebuilt it into a border fortress during the reconstruction, using it to guard against the greenskins that might invade at any time.
The reason was that, at the time, the greenskin threat to Great Zhou had been simply too great.
When constructing Plain Fortress, they had spared no effort. Even across the whole of Great Zhou, the specifications of the entire fortress were absolutely top-tier!
Through the continual reinforcement and strengthening that followed, the walls of Plain Fortress had reached a height of twenty meters, towering majestically into the sky!
At the same time, large numbers of City Defense Crossbows had been deployed atop every section of the walls. In addition, City Defense Demolition Vehicles had been stationed behind the high walls.
If the greenskins dared to attack, these defensive installations alone would be enough to give them a world of trouble.
Besides that, a large-scale Crossbow Soldier Unit had also been deployed inside the fortress.
One shouldn't forget that after the Individual Crossbow had been developed, it had first been issued to Plain Fortress to resist the greenskin invasion. The Crossbow Soldier Unit at Northeast Fortress had been formed only afterward.
After entering Plain Fortress, Zhou Xu and Shi Lei chatted as they conducted a brief inspection of the fortress, managing to reminisce while taking care of official business.
During the inspection, Zhou Xu had also been mulling over the upcoming military deployments.
Plain Fortress had originally been built to such high specifications mainly to guard against the greenskins. But now, the long war between the greenskin faction and the